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| author | Anton Blanchard <[email protected]> | 2011-03-09 03:38:42 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2011-03-16 13:04:13 +0000 |
| commit | 0837e3242c73566fc1c0196b4ec61779c25ffc93 (patch) | |
| tree | db77cdc93b99b1433b73a461f44543983af746bc /tools/perf/util/trace-event-scripting.c | |
| parent | perf, x86: Use INTEL_*_CONSTRAINT() for all PEBS event constraints (diff) | |
| download | kernel-0837e3242c73566fc1c0196b4ec61779c25ffc93.tar.gz kernel-0837e3242c73566fc1c0196b4ec61779c25ffc93.zip | |
perf, powerpc: Handle events that raise an exception without overflowing
Events on POWER7 can roll back if a speculative event doesn't
eventually complete. Unfortunately in some rare cases they will
raise a performance monitor exception. We need to catch this to
ensure we reset the PMC. In all cases the PMC will be 256 or less
cycles from overflow.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: <[email protected]> # as far back as it applies cleanly
LKML-Reference: <20110309143842.6c22845e@kryten>
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions